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Finding the Fourth Proportional to 966.56, 1,446.48 and 791.20

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Solution

The fourth proportional to 966.56, 1,446.48 and 791.20 is: 1,184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.56 : 1,446.48 = 791.20 : x
  2. Step 2: Convert to fraction form
    966.56/1,446.48 = 791.20/x
  3. Step 3: Cross multiply
    966.56x = 1,446.48 × 791.20
  4. Step 4: Simplify right side
    966.56x = 1,144,454.98
  5. Step 5: Solve for x
    x = 1,144,454.98/966.56
  6. Step 6: Final answer
    x = 1,184.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.